Motorola MC74LVXC3245DT, MC74LVXC3245DW Datasheet

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SEMICONDUCTOR TECHNICAL DATA

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The 74LVXC3245 is a 24–pin dual–supply, octal configurable voltage
interface transceiver especially well suited for PCMCIA and other real
time configurable I/O applications. The V
level; the A port is a dedicated 3V port. The V
supply level. The B port is configured to track the V
level on the V
V

will configure the I/O pins at a 3V level. The A port interfaces with a

CCB

3V host system and the B port to the card slots. This device will allow the
V

voltage source pin and I/O pins on the B port to float when OE

CCB

High. This feature is necessary to buffer data to and from a PCMCIA
socket that permits PCMCIA cards to be inserted and removed during
normal operation. The Transmit/Receive (T/R
direction of data flow. T ransmit (active–High) enables data from the A port
to B port. Receive (active–Low) enables data from the B port to the A port.

pin will configure the I/O pins at a 5V level and a 3V

CCB

• Bidirectional Interface Between 3V and 3V/5V Buses

• Control Inputs Compatible with TTL Level

• Outputs Source/Sink Up to 24mA

• Guaranteed Simultaneous Switching Noise Level and Dynamic

Threshold Performance

• Available in SOIC and TSSOP Packages

• Flexible V

• Allows B Port and V

Operating Range

CCB

CCB

to Float Simultaneously When OE Is High

• Functionally Compatible with the 74 Series 245

pin accepts a 3V supply

CCA

pin accepts a 3V–to–5V

CCB

supply level. A 5V

CCB

) input determines the

is



LVX

LOW–VOLTAGE CMOS

DW SUFFIX

24–LEAD PLASTIC WIDE SOIC PACKAGE

CASE 751E–04

DT SUFFIX

24–LEAD PLASTIC TSSOP PACKAGE

CASE 948H–01

V

NC OE

CCB

2324 22 21 20 19 18

21 34567

V

T/R

CCA

This document contains information on a new product. Specifications and information herein are subject to
change without notice.

7/97

 Motorola, Inc. 1997

B0 B1 B2 B3 B4 B5 B6

16

17

9

8

A0 A1 A2 A3 A4 A5 A6 A7

Figure 1. 24–Lead Pinout (Top View)

1

15

10

B7 GND
14

13

11

12

GND GND

PIN NAMES

Pins

OE
T/R
A0–A7

B0–B7

REV 1

Function

Output Enable Input
Transmit/Receive Input
Side A 3–State Inputs or 3–State
Outputs
Side B 3–State Inputs or 3–State
Outputs

MC74LVXC3245

OPERATING MODE

OE

T/R 2

22

A0

A1

A2

A3

A4

A5

A6

A7

10

3

21

B0

4

20

B1

5

19

B2

6

18

B3

7

17

B4

8

16

B5

9

15

B6

14

B7

Figure 2. Logic Diagram

INPUTS

OE T/R

L L B Data to A Bus
L H A Data to B Bus

H X Z

H = High Voltage Level; L = Low V oltage Level; Z = High Impedance State; X = High or Low Voltage Level
and Transitions are Acceptable; For ICC reasons, Do Not Float Inputs

MOTOROLA LVX Data — Low–Voltage CMOS Logic

2

Non–Inverting

BR1492 — Rev 0

MC74LVXC3245

ABSOLUTE MAXIMUM RATINGS*

Symbol Parameter Value Condition Unit

V

, V

CCA

CCB

V

I

V

I/O

I

IK

I

OK

I

O

ICC, I

GND

T

STG

* Absolute maximum continuous ratings are those values beyond which damage to the device may occur. Exposure to these conditions or conditions

beyond those indicated may adversely affect device reliability. Functional operation under absolute–maximum–rated conditions is not implied.

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Min Max Unit

V

, V

CCA

CCB

V

I

V

I/O

T

A

∆t/∆V Minimum Input Edge Rate

DC Supply Voltage –0.5 to +7.0 V
DC Input Voltage OE, T/R –0.5 to V
DC Input/Output Voltage An –0.5 to V

Bn –0.5 to V
DC Input Diode Current OE, T/R ±20 VI < GND mA
DC Output Diode Current ±50 VO < GND; VO > V
DC Output Source/Sink Current ±50 mA
DC Supply Current Per Output Pin

Storage Temperature Range –65 to +150 °C
DC Latchup Source/Sink Current ±300 mA

Supply Voltage (V

Input Voltage OE, T/R 0 V
Input/Output Voltage An

Operating Free–Air Temperature –40 +85 °C

VIN from 30% to 70% of VCC; VCC at 3.0V , 4.5V, 5.5V

CCA

≤ V

CCB

Maximum Current

)V

V

CCA
CCB

Bn

+0.5 V

CCA

+0.5 V

CCA

+0.5 V

CCB

±50

±200

2.7

3.0

0
0

0 8 ns/V

V
V

3.6

5.5
CCA

CCA
CCB

CC

mA

mA

V

V
V

DC ELECTRICAL CHARACTERISTICS

Symbol Parameter Condition V

V

V

V

V

V

V

IHA

IHB

ILA

ILB

OHA

OHB

Minimum HIGH Level
Input Voltage

Maximum LOW Level
Input Voltage

Minimum HIGH Level
Output Voltage

An

OE

T/R

Bn

An

OE

T/R

Bn

V

≤ 0.1V

OUT

or

≥ VCC – 0.1V

V

≤ 0.1V

OUT

or

≥ VCC – 0.1V

I

= –100µA

OUT

IOH = –12mA
IOH = –24mA
IOH = –12mA
IOH = –24mA

I

= –100µA

OUT

IOH = –12mA
IOH = –24mA
IOH = –24mA

CCAVCCB

2.7

3.0

3.6

2.7

3.0

3.6

2.7

3.0

3.6

2.7

3.0

3.6

3.0

3.0

3.0

2.7

2.7

3.0

3.0

3.0

3.0

3.0

3.6

5.5

3.0

3.6

5.5

3.0

3.6

5.5

3.0

3.6

5.5

3.0

3.0

3.0

3.0

4.5

3.0

3.0

3.0

4.5

TA = 25°C TA = –40 to +85°C

Typ Guaranteed Limits Unit

2.99

2.85

2.65

2.50

2.30

2.99

2.85

2.65

4.25

2.0

2.0

2.0

2.00

2.00

3.85

0.8

0.8

0.8

0.80

0.80

1.65

2.90

2.56

2.35

2.30

2.10

2.90

2.56

2.35

3.86

2.0

2.0

2.0

2.00

2.00

3.85

0.8

0.8

0.8

0.80

0.80

1.65

2.90

2.46

2.25

2.20

2.00

2.90

2.46

2.25

3.76

V

V

V

V

V

V

LVX Data — Low–Voltage CMOS Logic
BR1492 — Rev 0

3 MOTOROLA